package cc.SSM.utils;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.apache.log4j.Logger;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * Created by rongmc on 16/7/27.
 */
public class NetUtil {

    private static final Logger logger = Logger.getLogger("jxwifi");

    /**
     * 验证完了是否可达
     * @param host 域名
     * @param port 端口号
     * @param timeout 秒
     * @return
     */
    public static boolean pingHost(String host, int port, int timeout) {
        if(ParamUtil.isNullOrEmptyOrZero(host) || ParamUtil.isNullOrEmptyOrZero(port) || ParamUtil.isNullOrEmptyOrZero(timeout)){
            return false ;
        }
        Socket socket = new Socket();
        try{
            socket.connect(new InetSocketAddress(host, port), timeout*1000);//5秒过期
            socket.close();
            return true;
        } catch (Exception e) {
            try {
                socket.close();
            } catch (IOException e1) {
                e1.printStackTrace();
                return false ;
            }
            return false;
        }
    }


    public static String post(String url, Map<String, String> params) {
        DefaultHttpClient httpclient = new DefaultHttpClient();
        String body = null;

        logger.info("create httppost:" + url);
        HttpPost post = postForm(url, params);

        body = invoke(httpclient, post);

        httpclient.getConnectionManager().shutdown();

        return body;
    }

    public static String get(String url) {
        DefaultHttpClient httpclient = new DefaultHttpClient();
        String body = null;

        logger.info("create httppost:" + url);
        HttpGet get = new HttpGet(url);
        body = invoke(httpclient, get);

        httpclient.getConnectionManager().shutdown();

        return body;
    }


    private static String invoke(DefaultHttpClient httpclient,
                                 HttpUriRequest httpost) {

        HttpResponse response = sendRequest(httpclient, httpost);
        String body = paseResponse(response);

        return body;
    }

    private static String paseResponse(HttpResponse response) {
        logger.info("get response from http server..");
        HttpEntity entity = response.getEntity();
        String body = null;
        try {
            logger.info("response status: " + response.getStatusLine());
             body = EntityUtils.toString(entity,"UTF-8");
            logger.info(body);
        } catch (ParseException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return body;
    }

    private static HttpResponse sendRequest(DefaultHttpClient httpclient,
                                            HttpUriRequest httpost) {
        logger.info("execute post...");
        HttpResponse response = null;

        try {
            response = httpclient.execute(httpost);
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return response;
    }

    private static HttpPost postForm(String url, Map<String, String> params){

        HttpPost httpost = new HttpPost(url);
        List<NameValuePair> nvps = new ArrayList<NameValuePair>();

        Set<String> keySet = params.keySet();
        for(String key : keySet) {
            nvps.add(new BasicNameValuePair(key, params.get(key)));
        }

        try {
            logger.info("set utf-8 form entity to httppost");
            httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        return httpost;
    }

}
